FI892082A0 - Digitalisk modulator. - Google Patents

Digitalisk modulator.

Info

Publication number
FI892082A0
FI892082A0 FI892082A FI892082A FI892082A0 FI 892082 A0 FI892082 A0 FI 892082A0 FI 892082 A FI892082 A FI 892082A FI 892082 A FI892082 A FI 892082A FI 892082 A0 FI892082 A0 FI 892082A0
Authority
FI
Finland
Prior art keywords
digitalisk
modulator
digitalisk modulator
Prior art date
Application number
FI892082A
Other languages
English (en)
Other versions
FI892082A (fi
Inventor
A Vanwelsenaers
Original Assignee
Alcatel Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Nv filed Critical Alcatel Nv
Publication of FI892082A0 publication Critical patent/FI892082A0/fi
Publication of FI892082A publication Critical patent/FI892082A/fi

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0975—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation in the phase locked loop at components other than the divider, the voltage controlled oscillator or the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
    • H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
    • H03C3/0933—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop using fractional frequency division in the feedback loop of the phase locked loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
    • H03L7/1976—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
    • H03L7/1978—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider using a cycle or pulse removing circuit
FI892082A 1988-05-06 1989-05-02 Digitalisk modulator. FI892082A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE8800516A BE1001969A6 (nl) 1988-05-06 1988-05-06 Numerieke modulator.

Publications (2)

Publication Number Publication Date
FI892082A0 true FI892082A0 (fi) 1989-05-02
FI892082A FI892082A (fi) 1989-11-07

Family

ID=3883400

Family Applications (1)

Application Number Title Priority Date Filing Date
FI892082A FI892082A (fi) 1988-05-06 1989-05-02 Digitalisk modulator.

Country Status (3)

Country Link
AU (1) AU616506B2 (fi)
BE (1) BE1001969A6 (fi)
FI (1) FI892082A (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495505A (en) * 1990-12-20 1996-02-27 Motorola, Inc. Increased frequency resolution in a synthesizer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560233A (en) * 1977-02-02 1980-01-30 Marconi Co Ltd Frequency synthesisers
FR2511564A1 (fr) * 1981-08-17 1983-02-18 Thomson Csf Synthetiseur de frequences a division fractionnaire, utilise pour une modulation angulaire numerique
GB2173659B (en) * 1985-02-06 1988-06-08 Plessey Co Plc Frequency synthesisers

Also Published As

Publication number Publication date
FI892082A (fi) 1989-11-07
AU3329789A (en) 1989-11-09
AU616506B2 (en) 1991-10-31
BE1001969A6 (nl) 1990-04-24

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Legal Events

Date Code Title Description
FA Application withdrawn

Owner name: ALCATEL N. V.